3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'a,b\\\\\\,c,d'; preg_match_all('/(?:\\.|[^,]+)/', $str, $matches); var_dump($matches[0]);
based on DA4VF
Output for 4.3.0 - 7.2.0
array(4) { [0]=> string(1) "a" [1]=> string(4) "b\\\" [2]=> string(1) "c" [3]=> string(1) "d" }